18: A case reportF-FDG PET/CT imaging of atypical subacute thyroiditis in thyrotoxicosis: A case report

    loading  Checking for direct PDF access through Ovid



In addition to its established role in oncologic imaging, 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) is useful for the assessment of inflammatory activity. However, subacute thyroiditis (SAT) in thyrotoxicosis is rarely detected during these scans.


A 66-year-old man with SAT in thyrotoxicosis demonstrated symptoms of transient fatigue, headache, and fever, without typical neck pain. Using 18F-FDG PET/CT, we found increased 18F-FDG uptake in the thyroid gland, predominantly in the right side due to SAT. We also observed a coexisting decrease in 18F-FDG uptake in the liver and increased 18F-FDG uptake in skeletal muscle due to thyrotoxicosis.


Using 18F-FDG PET/CT, the combined observations of increased 18F-FDG uptake in the thyroid and skeletal muscle, and decreased 18F-FDG uptake in the liver, even when the typical symptom of neck pain is subtle or absent, may be helpful for the differential diagnosis of SAT in thyrotoxicosis.

Related Topics

    loading  Loading Related Articles